Complete Guide to Convert OST to MSG With Attachments

Summary: If you are a Microsoft Outlook user who wants to convert OST to MSG format, then this post is for you. In this guide, we will discuss what OST and MSG files are, why you might want to convert them, and how to do them. Moreover, we will take an overview of the best-recommended solutions for this conversion of OST to MSG along with providing the best OST to PST Converter tool.


Overview of OST and MSG File Format

OST and MSG are two different file formats used by Microsoft Outlook to store email data. But sometimes users want to convert OST to MSG file format.

OST files are Offline Storage Files that are created when you connect to an Exchange Server mailbox using Outlook. They store a copy of your mailbox data on your computer so that you can access it offline. When you connect to the Exchange Server again, your OST file is synchronized with the server so that you always have the latest version of your mailbox data.

MSG files are individual email message files that can be opened by any email client that supports the MSG format. They contain all of the information about an email message, including the message body, attachments, headers, and properties.

Reasons for OST to MSG Conversion

There are several reasons why you might want to convert an OST file to an MSG file. Here are some of the most common reasons why users want to convert the OST files to PST

  • To access your mailbox data in another email client. OST files are designed to be used with Microsoft Outlook, but you can also convert them to MSG files so that you can access them in other email clients, such as Thunderbird or Gmail.
  • To share your mailbox data with someone who does not use Microsoft Outlook. If you need to share your mailbox data with someone who does not use Microsoft Outlook, you can convert OST to MSG so that they can open it in their email client.
  • To recover corrupt OST files. If your OST file becomes corrupt, you may be able to recover the email messages by converting them to MSG files.
  • To migrate your mailbox to another computer. If you are moving to a new computer, you can export OST to MSG files so that you can easily import them into Outlook on your new computer.

Best Method to Export Outlook Emails from OST to MSG

The two best approaches are manual and automated methods of the OST to MSG conversion process. For professionally converting the OST files, many tech experts suggest the use of the expert’s tool. But, let’s discuss the manual method first.

Method 1: Convert OST to MSG Manually

This manual method is not effective as it is a time taking process but if you want to do your conversion by manual method then follow the below steps:

  1. Open Outlook and then select the email message that you want to convert.
  2. Hit on the File menu and pick out the Save As option.
  3. Then, in the Save As dialog box, select the MSG file format.
  4. Enter a file name for the new MSG file.
  5. Now, choose the location where you want to save the new MSG file.
  6. Finally, click on the Save button.

This manual method is a time taking process and the complexity increases after each step. So, we have the professional method also which we discuss now.

Method 2: Convert OST to MSG Professionally

The OST to PST Converter tool is the best and recommended software which is used by many tech experts also. This software has many features which make it easy for users to convert their OST files to PST in less time. It gives users the facility to convert OST to MBOX, PST, EML, EMLX, MSG, and CSV including email, attachments, contacts, etc.

  1. Launch and Open the OST to the PST Converter tool.
  2. Now, you have to select the Single File or Multiple Files/Folder option to convert OST Files.
  3. Then, browse the OST File which you want to change.
  4. From the tree structure of selected OST files, choose the files that you need to convert.
  5. After that, choose the saving format as MSG from the displayed drop-down as Saves/Backup/Migrate as.
  6. You can opt for various features such as Save in the Same folder, Remove Duplicate Emails, Maintain Folder Hierarchy, and so on.
  7. Then, Select the saving by clicking on the Path to Save.
  8. Finally, click the Convert button to start the process to convert OST to MSG.

Features of Professional Tool

This software can be used to convert OST files to various file formats. This tool is powerful and offers a wide range of features, including:

  • You can easily convert OST files of any size.
  • This software can recover deleted or corrupted OST files.
  • Users can convert OST to PST, EML, MSG, MBOX, HTML, PDF, and other file formats.
  • This tool makes an easy to user-friendly interface.
  • Technical support is available 24/7.


We have explained all the ways to move OST files to MSG files. Additionally, we have also come to know what OST and MSG files are, and why people might want to convert them. Finally, we have provided instructions on how to convert OST to MSG files. You can choose any of the methods, but we recommend using the utility that we have provided.

Frequently Asked Questions

Q. Can I convert multiple OST files to MSG?

Ans- Yes, you can easily convert multiple OST files to MSG by using the professional tool. This software gives the facility to users for converting multiple OST files to MSG at a time.

Q.  How do I convert OST files to MSG without altering content?

Ans- If you’re in search of the best tool for converting the OST files to MSG without altering the content then, we have the OST to PST Converter tool. This software provides various features to the user along with converting all the OST files to MSG easily without altering the content.

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About The Author:

As a Technical expert, I love to write blogs on email migration, data recovery, and cloud migration. In my free time, I like to research new things related to technology.

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